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List: ltp-cvs
Subject: [Ltp-cvs] ltp/testcases/open_posix_testsuite/stress/threads/pthread_mutex_trylock LICENCE,NONE,1.1 M
From: Robert Williamson <robbiew () users ! sourceforge ! net>
Date: 2004-12-20 17:04:51
Message-ID: E1CgQxn-00087A-P7 () sc8-pr-cvs1 ! sourceforge ! net
[Download RAW message or body]
Update of /cvsroot/ltp/ltp/testcases/open_posix_testsuite/stress/threads/pthread_mutex_trylock
In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv30688/stress/threads/pthread_mutex_trylock
Added Files:
LICENCE Makefile NOTES stress.c testfrmw.c testfrmw.h
Log Message:
Update to Version 1.5.0
--- NEW FILE: testfrmw.h ---
/*
* Copyright (c) 2004, Bull S.A.. All rights reserved.
* Created by: Sebastien Decugis
* This program is free software; you can redistribute it and/or modify it
* under the terms of version 2 of the GNU General Public License as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it would be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write the Free Software Foundation, Inc., 59
* Temple Place - Suite 330, Boston MA 02111-1307, USA.
*
* This file is a wrapper to use the tests from the NPTL Test & Trace Project
* with either the Linux Test Project or the Open POSIX Test Suite.
* The following macros are defined here:
* UNRESOLVED(ret, descr);
* where descr is a description of the error and ret is an int (error code for \
example)
* FAILED(descr);
* where descr is a short text saying why the test has failed.
* PASSED();
* No parameter.
*
* Both three macros shall terminate the calling process.
* The testcase shall not terminate without calling one of those macros.
*
*
*/
#include "posixtest.h"
#include <string.h> /* for the strerror() routine */
#ifdef __GNUC__ /* We are using GCC */
#define UNRESOLVED(x, s) \
{ output("Test %s unresolved: got %i (%s) on line %i (%s)\n", __FILE__, x, \
strerror(x), __LINE__, s); \ output_fini(); \
exit(PTS_UNRESOLVED); }
#define FAILED(s) \
{ output("Test %s FAILED: %s\n", __FILE__, s); \
output_fini(); \
exit(PTS_FAIL); }
#define PASSED \
output_fini(); \
exit(PTS_PASS);
#define UNTESTED(s) \
{ output("File %s cannot test: %s\n", __FILE__, s); \
output_fini(); \
exit(PTS_UNTESTED); \
}
#else /* not using GCC */
#define UNRESOLVED(x, s) \
{ output("Test unresolved: got %i (%s) on line %i (%s)\n", x, strerror(x), __LINE__, \
s); \ output_fini(); \
exit(PTS_UNRESOLVED); }
#define FAILED(s) \
{ output("Test FAILED: %s\n", s); \
output_fini(); \
exit(PTS_FAIL); }
#define PASSED \
output_fini(); \
exit(PTS_PASS);
#define UNTESTED(s) \
{ output("Unable to test: %s\n", s); \
output_fini(); \
exit(PTS_UNTESTED); \
}
#endif
--- NEW FILE: LICENCE ---
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--- NEW FILE: NOTES ---
This file contains various information.
Please refer to http://nptl.bullopensource.org/phpBB/ for general information
and questions. Feel free to post your questions there.
----------------------------------- COMPILATION -----------------------------------
We are doing our best to ensure the test case will be very portable.
Please report any problems on the forum (see on top of this file)
* Flags
You may want to add -DVERBOSE=2 to have verbose tests,
or -DVERBOSE=0 to have silent tests (for batchs for example).
You may add -DWITHOUT_XOPEN to disable the XSI features
from the tests. Some of the tests won't work with this option.
You may want to add -DSCALABILITY_FACTOR=X, where X is an integer,
to change the stress programs load (default is 1).
* Commands
Compilation under linux:
gcc -o <bin> -lpthread <source>
where <bin> is the executable you want to build and <source> is the source file.
Compilation under AIX5L
cc -o <bin> -lpthread <source>
same comment as above
Compilation under Solaris 9 (gcc: http://www.sunfreeware.com)
gcc -std=gnu99 -lpthread -lrt -o <bin> <source>
same comment as above.
Note: the -lrt is necessary for test cases using semaphore feature.
* Execution
Please consider the following:
-> I am sizing the tests to fit on a bi-xeon IA32 machine, with 2GB RAM.
You can change the SCALABILITY_FACTOR value to 2 or 3 to be more
resources consuming on a bigger system. This will create more threads,
etc... according to each case.
-> Stress tests will run until they are killed with SIGUSR1 (or they
fail). Currently, I do
$> ./stress &
and then after a while
$> kill -USR1 <pid>
or
$> for PR in `ps o pid --no-headers -Cstress`; \
do echo Sending SIGUSR1 to pid $PR...; \
kill -USR1 $PR; \
done;
Some cases will keep on executing ~ 1 minute after they receive the
signal; it is normal (time for stopping all threads).
--- NEW FILE: Makefile ---
# Copyright (c) 2004, Intel Corporation. All rights reserved.
# Created by: adam.li@intel.com
# This file is licensed under the GPL license. For the full content
# of this license, see the COPYING file at the top level of this
# source tree.
CFLAGS := -Wall -I../../../include -O2
LDFLAGS := -lpthread -lrt
TARGETS := stress
all: $(TARGETS)
clean:
rm -f $(TARGETS)
--- NEW FILE: stress.c ---
/*
* Copyright (c) 2004, Bull S.A.. All rights reserved.
* Created by: Sebastien Decugis
* This program is free software; you can redistribute it and/or modify it
* under the terms of version 2 of the GNU General Public License as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it would be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write the Free Software Foundation, Inc., 59
* Temple Place - Suite 330, Boston MA 02111-1307, USA.
* This file is a stress test for the pthread_mutex_trylock function.
*
* It aims to check that when EBUSY is returned, the mutex has not been locked.
* The steps are:
* -> do
* -> Set up a timeout. The test fails if this timeout expires.
* -> lock the mutex
* -> create N threads.
* -> each thread loops on pthread_mutex_trylock while ret == EBUSY and go_on is \
true..
* -> if ret == 0 && go_on is true, wait on a barrier then go_on = 0.
* -> if ret == 0 unlock the mutex
* -> do
* -> unlock the mutex
* -> yield
* -> trylock the mutex
* -> while we don't get EBUSY.
* -> wait on the barrier to unblock the thread which got the 0 error code.
* If no thread got this code but one got the mutex,
* the main thread will hang here and the timeout will expire (test FAILS).
* -> join all the threads
* -> while we don't receive SIGUSR1
*/
/* We are testing conformance to IEEE Std 1003.1, 2003 Edition */
#define _POSIX_C_SOURCE 200112L
/* We need the XSI extention for the mutex attributes */
#ifndef WITHOUT_XOPEN
#define _XOPEN_SOURCE 600
#endif
/********************************************************************************************/
/****************************** standard includes \
*****************************************/ \
/********************************************************************************************/
#include <pthread.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
#include <semaphore.h>
#include <signal.h>
/********************************************************************************************/
/****************************** Test framework \
*****************************************/ \
/********************************************************************************************/
#include "testfrmw.h"
#include "testfrmw.c"
/* This header is responsible for defining the following macros:
* UNRESOLVED(ret, descr);
* where descr is a description of the error and ret is an int (error code for \
example)
* FAILED(descr);
* where descr is a short text saying why the test has failed.
* PASSED();
* No parameter.
*
* Both three macros shall terminate the calling process.
* The testcase shall not terminate in any other maneer.
*
* The other file defines the functions
* void output_init()
* void output(char * string, ...)
*
* Those may be used to output information.
*/
/********************************************************************************************/
/********************************** Configuration \
******************************************/ \
/********************************************************************************************/
#ifndef VERBOSE
#define VERBOSE 1
#endif
#ifndef SCALABILITY_FACTOR
#define SCALABILITY_FACTOR 1
#endif
#define NCHILDREN (20 * SCALABILITY_FACTOR)
#define TIMEOUT (120 * SCALABILITY_FACTOR)
/********************************************************************************************/
/*********************************** Test case \
*****************************************/ \
/********************************************************************************************/
char do_it=1;
/* Signal handler which will stop the stress run */
void sighdl(int sig)
{
do { do_it = 0; }
while (do_it);
}
/* Timeout thread */
void * timer(void * arg)
{
unsigned int to = TIMEOUT;
do { to = sleep(to); }
while (to>0);
FAILED("Operation timed out. EBUSY was returned while a thread acquired the \
mutex?."); return NULL; /* For compiler */
}
/* Test specific data */
char go_on=0;
typedef struct
{
pthread_mutex_t * mtx;
pthread_barrier_t * bar;
} testdata_t;
struct _scenar
{
int m_type; /* Mutex type to use */
int m_pshared; /* 0: mutex is process-private (default) ~ !0: mutex is \
process-shared, if supported */ char * descr; /* Case description */
}
scenarii[] =
{
{PTHREAD_MUTEX_DEFAULT, 0, "Default mutex"}
#ifndef WITHOUT_XOPEN
,{PTHREAD_MUTEX_NORMAL, 0, "Normal mutex"}
,{PTHREAD_MUTEX_ERRORCHECK, 0, "Errorcheck mutex"}
,{PTHREAD_MUTEX_RECURSIVE, 0, "Recursive mutex"}
#endif
,{PTHREAD_MUTEX_DEFAULT, 1, "Pshared mutex"}
#ifndef WITHOUT_XOPEN
,{PTHREAD_MUTEX_NORMAL, 1, "Pshared Normal mutex"}
,{PTHREAD_MUTEX_ERRORCHECK, 1, "Pshared Errorcheck mutex"}
,{PTHREAD_MUTEX_RECURSIVE, 1, "Pshared Recursive mutex"}
#endif
};
#define NSCENAR (sizeof(scenarii)/sizeof(scenarii[0]))
void * threaded(void * arg)
{
int ret = 0, ret2=0;
testdata_t * td = (testdata_t *) arg;
/* do */
do
{
/* trylock the mutex */
ret = pthread_mutex_trylock(td->mtx);
/* yield */
sched_yield();
}
/* while trylock returns EBUSY and go_on == 1 */
while ((ret == EBUSY) && (go_on == 1));
/* if go_on==1 and ret == 0 */
if ((go_on == 1) && (ret == 0))
{
#if VERBOSE > 6
output("[child %p] I got the mutex\n", pthread_self());
#endif
/* barrier */
ret2 = pthread_barrier_wait(td->bar);
if ((ret2 != 0) && (ret2 != PTHREAD_BARRIER_SERIAL_THREAD)) { UNRESOLVED(ret2, \
"Pthread_barrier_wait failed"); }
/* go_on = 0 */
go_on = 0;
}
/* if ret == 0 */
if (ret == 0)
{
/* Unlock the mutex */
ret = pthread_mutex_unlock(td->mtx);
if (ret != 0) { UNRESOLVED(ret, "Failed to unlock the mutex"); }
}
/* end of thread */
return NULL;
}
int main (int argc, char * argv[])
{
int ret;
struct sigaction sa;
pthread_t t_child[NCHILDREN];
pthread_t t_timer;
testdata_t td;
int i, ch;
long pshared;
pthread_mutex_t mtx[NSCENAR+2];
pthread_mutexattr_t ma;
pthread_barrier_t bar;
/* Initialize output */
output_init();
/* System abilities */
pshared = sysconf(_SC_THREAD_PROCESS_SHARED);
/* Register the signal handler for SIGUSR1 */
sigemptyset (&sa.sa_mask);
sa.sa_flags = 0;
sa.sa_handler = sighdl;
if ((ret = sigaction (SIGUSR1, &sa, NULL)))
{ UNRESOLVED(ret, "Unable to register signal handler"); }
if ((ret = sigaction (SIGALRM, &sa, NULL)))
{ UNRESOLVED(ret, "Unable to register signal handler"); }
#if VERBOSE > 1
output("[parent] Signal handler registered\n");
#endif
/* Initialize the barrier */
ret = pthread_barrier_init(&bar, NULL, 2);
if (ret != 0) { UNRESOLVED(ret , "Barrier init failed"); }
td.bar = &bar;
/* Initialize every mutexattr & mutex objects */
for (i=0; i<NSCENAR; i++)
{
ret = pthread_mutexattr_init(&ma);
if (ret != 0) { UNRESOLVED(ret, "[parent] Unable to initialize the mutex \
attribute object"); } #ifndef WITHOUT_XOPEN
/* Set the mutex type */
ret = pthread_mutexattr_settype(&ma, scenarii[i].m_type);
if (ret != 0) { UNRESOLVED(ret, "[parent] Unable to set mutex type"); }
#endif
/* Set the pshared attributes, if supported */
if ((pshared > 0) && (scenarii[i].m_pshared != 0))
{
ret = pthread_mutexattr_setpshared(&ma, PTHREAD_PROCESS_SHARED);
if (ret != 0) { UNRESOLVED(ret, "[parent] Unable to set the mutex \
process-shared"); } }
/* Initialize the mutex */
ret = pthread_mutex_init(&mtx[i], &ma);
if (ret != 0) { UNRESOLVED(ret, "[parent] Mutex init failed"); }
/* Destroy the ma object */
ret = pthread_mutexattr_destroy(&ma);
if (ret != 0) { UNRESOLVED(ret, "Failed to destroy the mutexattr object"); }
}
/* Default mutexattr object */
ret = pthread_mutexattr_init(&ma);
if (ret != 0) { UNRESOLVED(ret, "[parent] Unable to initialize the mutex attribute \
object"); } ret = pthread_mutex_init(&mtx[i], &ma);
if (ret != 0) { UNRESOLVED(ret, "[parent] Mutex init failed"); }
ret = pthread_mutexattr_destroy(&ma);
if (ret != 0) { UNRESOLVED(ret, "Failed to destroy the mutexattr object"); }
/* Default mutex */
ret = pthread_mutex_init(&mtx[i+1], NULL);
if (ret != 0) { UNRESOLVED(ret, "[parent] Mutex init failed"); }
i = 0;
/* While we are not asked to stop */
while (do_it)
{
/* Start the timeout thread */
ret = pthread_create(&t_timer, NULL, timer, NULL);
if (ret != 0) { UNRESOLVED(ret, "Unable to create timer thread"); }
/* Set the td pointer to the next mutex */
td.mtx = &mtx[i];
/* lock this mutex */
ret = pthread_mutex_lock(td.mtx);
if (ret != 0) { UNRESOLVED(ret, "Failed to lock a mutex"); }
/* go_on = 1 */
go_on = 1;
/* Start the children */
for (ch=0; ch < NCHILDREN; ch++)
{
ret = pthread_create(&t_child[ch], NULL, threaded, &td);
if (ret != 0) { UNRESOLVED(ret, "Failed to create enough threads"); }
}
#if VERBOSE > 5
output("[parent] The children are running...\n");
#endif
/* do */
do
{
/* unlock the mutex */
ret = pthread_mutex_unlock(td.mtx);
if (ret != 0) { UNRESOLVED(ret, "Failed to unlcok the mutex"); }
/* yield */
sched_yield();
/* trylock the mutex again */
ret = pthread_mutex_trylock(td.mtx);
}
/* while trylock succeeds */
while (ret == 0);
if (ret != EBUSY) { UNRESOLVED(ret, "An unexpected error occured"); }
#if VERBOSE > 6
output("[parent] Mutex is busy, a child shall be waiting on the barrier\n");
#endif
/* barrier */
ret = pthread_barrier_wait(&bar);
if ((ret != 0) && (ret != PTHREAD_BARRIER_SERIAL_THREAD)) { UNRESOLVED(ret, \
"Pthread_barrier_wait failed"); }
/* cancel the timeout thread */
ret = pthread_cancel(t_timer);
if (ret != 0) { UNRESOLVED(ret, "Failed to cancel the timeout thread"); }
/* join every threads (incl. the timeout) */
ret = pthread_join(t_timer, NULL);
if (ret != 0) { UNRESOLVED(ret, "Failed to join timeout thread"); }
for (ch=0; ch < NCHILDREN; ch++)
{
ret = pthread_join(t_child[ch], NULL);
if (ret != 0) { UNRESOLVED(ret, "Failed to join a child"); }
}
/* next mutex */
i++;
i %= NSCENAR + 2;
}
/* destroy the barrier & mutexes objects */
ret = pthread_barrier_destroy(&bar);
if (ret != 0) { UNRESOLVED(ret, "Failed to destroy the barrier"); }
for (i=0; i<NSCENAR+2; i++)
{
ret = pthread_mutex_destroy(&mtx[i]);
if (ret != 0) { UNRESOLVED(ret, "Failed to destroy a mutex"); }
}
#if VERBOSE > 0
output("pthread_mutex_trylock stress test passed\n");
#endif
/* test passed */
PASSED;
}
--- NEW FILE: testfrmw.c ---
/*
* Copyright (c) 2004, Bull S.A.. All rights reserved.
* Created by: Sebastien Decugis
* This program is free software; you can redistribute it and/or modify it
* under the terms of version 2 of the GNU General Public License as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it would be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write the Free Software Foundation, Inc., 59
* Temple Place - Suite 330, Boston MA 02111-1307, USA.
*
* This file is a wrapper to use the tests from the NPTL Test & Trace Project
* with either the Linux Test Project or the Open POSIX Test Suite.
* The following function are defined:
* void output_init()
* void output_fini()
* void output(char * string, ...)
*
* The are used to output informative text (as a printf).
*/
#include <time.h>
#include <sys/types.h>
/* We use a mutex to avoid conflicts in traces */
static pthread_mutex_t m_trace = PTHREAD_MUTEX_INITIALIZER;
/*****************************************************************************************/
/******************************* stdout module \
*****************************************/ \
/*****************************************************************************************/
/* The following functions will output to stdout */
#if (1)
void output_init()
{
/* do nothing */
return;
}
void output( char * string, ... )
{
va_list ap;
char *ts="[??:??:??]";
struct tm * now;
time_t nw;
pthread_mutex_lock(&m_trace);
nw = time(NULL);
now = localtime(&nw);
if (now == NULL)
printf(ts);
else
printf("[%2.2d:%2.2d:%2.2d]", now->tm_hour, now->tm_min, now->tm_sec);
va_start( ap, string);
vprintf(string, ap);
va_end(ap);
pthread_mutex_unlock(&m_trace);
}
void output_fini()
{
/*do nothing */
return;
}
#endif
-------------------------------------------------------
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